LochBot

Free prompt injection checker testing system prompts against 31 attack patterns.

About LochBot

LochBot is a free, browser-based checker that analyzes LLM system prompts for prompt-injection vulnerabilities. It tests prompt text against thirty-one attack patterns in seven categories, including instruction overrides, delimiter escapes, role-play jailbreaks, and data extraction, then returns a security score from zero to one hundred with a specific fix suggestion for each weakness. Because analysis runs entirely client-side, prompts never leave the user's machine, suiting developers and security teams.

LochBot website preview

Live preview of lochbot.com via the WordPress mShots service — it can take a few seconds to generate on a first visit.

LochBot: strengths & things to check

Strengths

Completely free to use — this directory lists no paid plan for it.
Covers prompt injection, llm security, ai safety, checker — see the focus areas listed in its key facts.
Has 1 close alternative in the same category on this page, so switching or comparing is easy.

Things to check

Free tools can change their model or shut down — avoid locking critical work into it without an export path.
Current plan prices are not listed here (they change too often to print reliably) — confirm the exact price on the official site.
It is one of 1164 tools in the Developer Tools category here — compare it against the alternatives below before you commit.

Derived from this listing's own data (pricing model, focus areas and category) — not a hands-on review score.

LochBot pricing

Pricing model	Free — listed in this directory as a free tool, with no paid plan required to use it.
Free access	Yes — fully free
Current plan prices	Listed on the official site — prices change, so this directory links out instead of printing a number that may already be stale.
Official site	lochbot.com

LochBot key facts

Category: Developer Tools
Pricing: Free — listed in this directory as a free tool, with no paid plan required to use it.
Focus areas: prompt injection, llm security, ai safety, checker
Official site: lochbot.com

LochBot FAQ

How much does LochBot cost?

Free — listed in this directory as a free tool, with no paid plan required to use it. Current plans and prices are listed on the official site (lochbot.com).

What is LochBot used for?

Free prompt injection checker testing system prompts against 31 attack patterns. Its focus areas in the Developer Tools category: prompt injection, llm security, ai safety, checker.

Where can I try LochBot?

On its official site, lochbot.com — the Visit Official Site button above goes straight there.

LochBot vs alternatives

	LochBot	OpenGraph.xyz
Pricing	Free — listed in this directory as a free tool, with no paid plan required to use it.	Free — listed in this directory as a free tool, with no paid plan required to use it.
Focus areas	prompt injection, llm security, ai safety, checker	open graph, checker, seo, preview
Official site	lochbot.com	opengraph.xyz
Directory status	Listed	Listed

Side-by-side from each listing's own directory data. Full alternative cards are below.

About the Developer Tools category

Editors, platforms, and services developers rely on to build and ship software. The Developer Tools category on Tools Hub currently lists 1164 tools. Alongside LochBot, it includes Netron, Cronicle, Healthchecks, OliveTin.

FreeDeveloper Toolsprompt-injectionllm-securityai-safetychecker

Alternatives to LochBot

Tools in the same Developer Tools category that share focus areas with LochBot — worth comparing before you commit:

Developer Tools

OpenGraph.xyz

Open Graph checker and preview tool

Freeopen graphcheckerseopreview

More in Developer Tools

Comparing tools in the Developer Tools category? These related listings are worth a look: Netron — Visualizer for neural network, deep learning and machine learning models; Cronicle — Multi-server task scheduler and runner with a web-based user interface; Healthchecks — Cron job and background task monitoring with alerts when jobs fail.